Tooth clamp



Dec. 16, 1930.

I HALLER TOOTH CLAMP Filed May 12, 1928 Patented Dec. 16, 1930 PATENT OFFICE LUDWIG HALLER, OF STUTTGART, GERMANY TOOTH CLAMP Application filed May 12, 1928, Serial No. 277,325, and. in Germany September 1, 1927.

A slight injury of the gums is very onerous during the filling of a tooth and itmakes the operation rather diflioult.

By this invention the operation is facilitated, as the gum is protected against injury caused by the instruments by means of a metal-clamp clamped on the neck of a crown of a tooth in the neighbourhood of the point at which the operation has to be carried out. The metal-clamp has two parallel arms, 8X- tending on the inner side and on the outer side of the teeth along the gum, these arms being stepped from the t0oth-neck in the direction of the roots of the tooth, so that at either side of the alveolar ridge supporting points for a rubber-thread are formed. By this rubber thread the portion of the gum, which projects between two adjacent toothcrowns, can be tied back and eventual bleedings are tied ofl at the same time.

An embodiment of the invention is illustrated, by way of example, in the accompanying drawing, in which:

Fig. 1 is a perspective view of the clamp.

Fig. 2 shows a row of teeth in side-elevation. Fig. 3 is a similar view to Fig. 1 showing a clamp on the upper jaw and a clamp on the lower jaw, by means of which the tying back of the gum between two tooth-crowns and the tying oil of the bleeding points is effected with the aid of the rubber-thread.

Fig. 4 shows in top-plan-view a row of molars and a clamp mounted on the same.

Prior to the stopping the operation-field is uncovered by tying back the portions 9 of the gum (Fig. 2) by means of a rubberthread, held by a clamp fixed on the crown of a tooth. H

The clamp proper consists, in a manner known per se, of a resilient bow a (Figs. 2 mid 3) in which two parallel arms I) and 0 are inserted which are stepped towards the ends of the roots of the tooth and extend on the inner side and on the outer side of the gum so that, when the clamp is used for the upper jaw, the arms are above the crowns of the teeth and when the clamp is clamped on the teeth of the lower jaw they are below the crowns of the teeth.

Around the arms Z), 0, and over hooks d, 6, known per se, a rubber-thread f is then tied and stretched as much as possible so that it ties oil' the bleeding points 9 and ties back the projecting portion 9 of the gum.

I claim:

A tooth clamp comprising a bow, two parallel arms extending on the inner side and on the outer side along a row of teeth, bent extensions of said bow holding said arms on the clamp bow in the direction of the tooth roots, said arms adapted-to hold an elastic tying-01f element or" rubber thread for pressing back the gum between two tooth-crowns.

In testimony whereof I aifix my signature.

LUDWIG HALLER. 

